Means for attaching gas-delivery tubes of cutting torches



$5 m. /U/f, m

Sept. f8, 1925.

ci J. COBERLY MEANS FOR ATTACHING GAS DELIVERY TUBES OF CUTTING TORCHES v Filed Jan. 2, 1924 Patented Si. S, 1925.

unirse As'rnrus .PATENTy CLARENCE J. CDBERLY, 0F LOS ANGELES, CALIFORNIA, SSRI-1F03, BY MESNE AS- SIGNMENTS, T0 .PUROX COMPANY, OF IIE-ITVIEIB.,` COLORADO, A GOBPOBATIQN 0F coronare,

MEAB FOR ATTACHING GAS-DELIVERY TUBES 0F CUTTING TORCHS.-

Application led January 2, 1924. Eerial No. 684,096. l

To all whom t may concern:

Be it known that I, CLARENCE J. COBERLY, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Means for Attaching Gas-Delivery Tubes of Cutting Torches, of which 'the following is a specification.

This invention relates to the construction of cutting torches'of the type used for cutting metals with astream of oxygen.` Such torches are ordinarily designed for the. use

of oxygen and acetylene and are providedwitha burner head having a cutting tip to which the combustible mixture of acetylene and oxygen 'is delivered through one pipe and the oxygen through another pipe. These pipes extend from the mixing head situated in the handle of the torch to the burner head andare ordinarily removably secured in the mixing head by screw th ed lfixtures. The wrench engagement p rtions provided on these attachment fixtures necessitates the spreading apart of the gas delivery tubes with the result that the width of the handle is quite large.

It is the principal object of the invention to provide a means for attaching the gas delivery tubes in such a manner that they may be placed relatively close together, thus allowing the size of th delivery tubes to be considerably reduced in size, therefore reducing the weight of the torch and permitting a more perfect balance which is very desirable.

rThe especial advantages of the invention and further objects thereof will be made evident hereinafter. l

Referring to the drawing which is for illustrative purposes only:

, Fig. 1 is a plan view of cutting torch embodying the features of the invention.

Fig. 2 is a side elevation of the cutting torch partially in section to illustrate the features of the attachment means employed therewith.

Fig. 3 is an enlarged section'taken upon plane represented by the line 3 3- of ig. 2. Y

Fig. 4; is an enlarged fragmentary section corresponding to' the sectionedportion of Fig'. 2. n I

The cuttin torch shown in the drawing consists of a andle or grip portion 11, hav- `ing a head V12 in the forward end thereof in which the mixing chamber isssituated. From the obla portion 13 of the head 12, an oxygen delivery tube 14- and a combustible gas mixture tube. 15 are forwardly extended to a burner head 18 in'which the cutting ti 19 is placed. As shown in Figs. 2 and 4, t einner end 2O of the combustible gas delivery tube 15 extends into an'opening 21 provided in the portion, -13 of 'the mixing head and extends over the nozzle 22 5 of a. mixer 23 situated within the opeining 21.

When it is necessary to change the mixer 23,

the tube 15 must be removed from the opening 21 which removal necessitates also the removal of the tube 14; from the open-ingv 25 into which it extends. For securing the tubular memberV 15 in the opening 21, a bushing 26 is employed which surrounds the member 15, threads into the mouth of the opening 21 and bears againsta shoulder formed by a collar 27 threaded upon the end 20 of the member 15.

The tubular member 14 is somewhat longer than the member 15 and the reduced end 29 thereof extends into the'v bottom 30 of the opening 25 which isof educedldiameter, so that the end 29 sets snugly therein. Adjacent to the reduced end 29, screw threads 32 are formed v upon the tubularl member 14 and in an open notch-33 cut into the oblate portion 13 from the to thereof and at a position spaced away rom the end and corresponding with the position of the threads 32 formed upon the member 14:, a nut 34 is situated which screws upon the threads 32 and thus draws the tubular member 14 securelyinto place in the opening 25. By this construction, the 'tubular members 14 .and 15 may be spaced `just far enough apart to allow clearance of the wrench engagement portion 36 of the bushing 26 whleh hold in place. l

It will be recognized 'that if both tubular members were secured'by bushings, they would have to be spaced further apart to provide the space required for wrench engagement portions of two bushings, instead of the space required for the single bushing y s the tubular member 15 alud l, In a torch, the combination of.: a noix-4 ing head having a pair of outlet openings therein, and a, lateral notch con'imunicating' with one of said openings at an intermediate point thereof; aburner head; a pair of deiivery tubes. extending from said burner head and/engaging into the respective outiet openings ot the mixing head; a' nut disposed in said notch in threaded engagement with one oi' said tubes and a bushinvtorsecuring the other of said tubes in the other outlet opening.

2. n a torch, ing head having a 'pair of p'araliel bores and a iateral notch intersectingr one oi vsaid bores intermediate its ends; a burner head, a pair of narallel delivery tubes extendingr from said burner head and engaging into the` respective bores of the mixing" head; al nut disposed in said notch iri'threaded engagement with one of said tubes; and a. 'bushing for securing the other ot said tubes in the other bore. f

3. ln a torch, the combination of: a mixino: head having a pair of parallel ciosci adjacent bores and a lateral notch intersectme; one o said bores intermediate its ends; a' burner head; a pair of parallel delivery tubes extending from said burner head and extending: into-the respective bores oi. the mixing hear.; a nut disposed in said notch in threaded engagement With one of said tubes? and a bushingA for securing, the other tube in the other of said bores,the head of said bushing being in close proximity to the side Wall of the adjacent tube.

' 4. in combination: a. member from ivhich an outlet is taken comprising a body having an outer bore, an inner bore of smaller dieineter thanv said outer bore and in alignment therewith, and a notch communicating between the inner end of'said outer bore and the outside of said body; a tubular member having a portion adjacent to its end arranged nt said outer bore and the end thereof .ot a sine to .fit said inner bore,

the combination ot': a i'niX` said portion arranged to t said outer bore being' threaded; and a nut disposed in said notchI and engaging Athc threads on said niernbegtor drawing said member inwardly in said openings.

In, a torch, the combination of: a, inining`head having a pair of outlet openings therein and a lateral notch' communicating Vith the first of said openings; a burner ieacl; a pair of delivery 'tubcsiextending from said burner head, the first of said tubes 'onnnunicating with said first opening and the second of said vtubes communicating with the second of said openings and being of less length than said first tubeg a bushin for securing said second tube in said secon opening; and a nut disposed in said notch in threaded engagement with said first tube.

6. in a torch, the combination otra mixing; head having; a pair of outlet openings therein and alateral notch communicating with the iirst ot' said openings; a removable mixer in the s nd of said openings; a burner head; a pair of delivery tubes eX- tending from said burner head, the first of said tubes communicating with said first opening' and the second oi said tubes communicatingr with the second of said openings and being of less length than said irst tube; a bushing for securing said second tube in said second opening, said bushing being threaded in the mouth of said opening and functioning to force said second tube against said mixer, and thereby to seat saidniixer firmlyoin operative position; and a nut disposed in said notch in threaded engagement With said first tube.

7. In a torch, the combination of: a mixing head having a pair of parallel closely adjacent bores` and a. lateral notch intersecting one of, said bores intermediate its ends; a burner head; a pair of parallel delivery tubes 'extending from said burner head, one` tube en'aging into the notched bore ot the mixing head, and. having a screw-threadedy portion, and the other tube en aging into the adjacent bore thereof enel having.- a shoulder near its end; a nut dis osed in said notch and engaging the screw-threaded portion of the rst named tube; and a bushing" having a screw-threaded' engagement in the adjacent bore and engaging Athe shoulder of the second named tube. i i 1 In testimony whereof have hereunto set my hand at Los Angeles, California, this 21st day of December, 1923.

CLARENCE J. COBERLY.

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